Hey, i tried to do an update and showed me this erros

: The repository ‘Index of /wine-builds/ubuntu jolnir Release’ does not have a Release file.
N: Updating from such a repository can’t be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository ‘Index of http://download.virtualbox.org/virtualbox/debian jolnir Release’ does not have a Release file.
N: Updating from such a repository can’t be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

I managed to solved it i use:

grep -r ^deb /etc/apt --include='*.list'

then look for the repositories and remove them with:
sudo rm "repository_name"
it remove some others repositories but i installed them with software and updates (the software that comes by default)